Masochist Boyfriend! What do I do???

Vent: My boyfriend of 4 years just told me he’s a masochist. That he’s hid it from me all these years because he is embarrassed by it and felt like I wasn’t going to to accept him for who he is . He won’t tell me anything else but I wanna know some insight on it. What should I do? How should I do it? To be honest I’m very uncomfortable with this. He made me watch an anime and said that it’s similar to what he likes. Which made it more weird and awkward. He doesn’t know that it makes me uncomfortable or weird or awkward but I want to do this for him and I need to know how and how to get passed the uncomfortable feeling

Update: I did something last night. While he was naked and I still had on underwear I slammed my butt on his dick hard and keep doing it and he got off on it. His moans where completely different then usual. Then this morning when we was having sex and he kept trying to lift his legs up to stop me from fucking him (I was ontop) and I told him to stop and to put his legs down he started moaning like last night. Is that some insight to what he likes does he like the pain or being told what to do ?

Update: last night we tried it his way and I loved it. He’s Into me teasing him and forcing him to do or say stuff. He’s slowly telling me everything he likes but so far I’m down for it all. It was so thrilling and I want it again all I thought bout today was having sex to experience it again 😩 the dirty talk was a1